51341252360221 has 2 divisors, whose sum is σ = 51341252360222. Its totient is φ = 51341252360220.

The previous prime is 51341252360149. The next prime is 51341252360239. The reversal of 51341252360221 is 12206325214315.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49443553255321 + 1897699104900 = 7031611^2 + 1377570^2 .

It is a cyclic number.

It is not a de Polignac number, because 51341252360221 - 2²³ = 51341243971613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51341252363221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25670626180110 + 25670626180111.

It is an arithmetic number, because the mean of its divisors is an integer number (25670626180111).

Almost surely, 2^{51341252360221} is an apocalyptic number.

It is an amenable number.

51341252360221 is a deficient number, since it is larger than the sum of its proper divisors (1).

51341252360221 is an equidigital number, since it uses as much as digits as its factorization.

51341252360221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 51341252360221 its reverse (12206325214315), we get a palindrome (63547577574536).

The spelling of 51341252360221 in words is "fifty-one trillion, three hundred forty-one billion, two hundred fifty-two million, three hundred sixty thousand, two hundred twenty-one".